Simon Pilgrim a066f1f9e6 [Vectorizer] Add vectorization support for fixed smul/umul intrinsics ...

This requires a couple of tweaks to existing vectorization functions as they were assuming that only the second call argument (ctlz/cttz/powi) could ever be the 'always scalar' argument, but for smul.fix + umul.fix its the third argument.

Differential Revision: https://reviews.llvm.org/D58616

llvm-svn: 354790

2019-02-25 15:42:02 +00:00

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